I have a 181DC champ with a 150 fast strike both are 1995 ---I am running a 25P renegade ---only turning about 5000 rpm ---seems like too much prop ---any suggestions for my setup for different prop ---i have always ran 3 blades before this so a 3 or 4 blade would be ok with me ---boat wants to get all the way up on pad but wont get that last step up ---only running 50gps